The present invention relates to a cleaning tool for cleaning an aerosol-generating device.
For generating an inhalable aerosol, aerosol-generating devices are known which heat but not burn an aerosol-generating substrate. The substrate typically comprises an aerosol-former and homogenised tobacco material. The substrate may be wrapped with a wrapping paper and provided in the form of a disposable rod such as a heat stick. The known aerosol-generating device comprises a heating chamber, in which the aerosol-generating substrate can be inserted. A heating element such as a heating blade is also arranged in the heating chamber of the aerosol-generating device. During operation of the aerosol-generating device, the aerosol-generating substrate is penetrated by the heating element and subsequently heated to generate an inhalable aerosol. After depletion of the aerosol-generating substrate, the substrate is removed from the heating chamber of the aerosol-generating device. A fresh aerosol-generating substrate can then be inserted into the heating chamber. However, residues of the aerosol-generating substrate may remain in the heating chamber and on the heating element.
Thus, there is a need for a device for cleaning the heating chamber and the heating element of the aerosol-generating device after operation and removal of the aerosol-generating substrate.
According to a first aspect of the invention there is provided a cleaning tool for cleaning an aerosol-generating device. The aerosol-generating device comprises a heating chamber and a heating element arranged in the heating chamber. The cleaning tool comprises an elongate element that has a proximate end and a distal end. The elongate element comprises an abrasive surface and is configured to be inserted into the heating chamber of the aerosol-generating device for cleaning at least the heating element.
The cleaning tool has a length such that the tool can be inserted into the heating chamber of the aerosol-generating device and during the process held by a user. The abrasive surface of the elongate element is configured for scraping off of residues of the aerosol-generating substrate from the heating element. Preferably, the elongate element is also suited for scraping off of residues of the aerosol-generating substrate from the heating chamber of the aerosol-generating device. The abrasive surface of the elongate element preferably extends along the side surface of the elongate element. In this way, the length of the heating element can be cleaned by sliding the abrasive surface of the elongate element along the length of the heating element. The abrasive surface of the elongate element may also be arranged such that the cleaning tool together with the elongate element and the abrasive surface can be rotated around the heating element so that the abrasive surface comes into contact with the circumference of the heating element.
The elongate element may be made from cardboard, preferably corrugated cardboard, wherein the corrugations preferably extend along the longitudinal length of the elongate element.
Cardboard is a readily available, environmentally friendly and cheap material with relatively high stability. In this way, the cleaning tool can be provided with the mechanical stability to facilitate the cleaning operation within the heating chamber of the aerosol-generating device. At the same time, the cleaning tool can be provided as a cheap disposable so that the tool can be for example added to a pack of heat sticks. The overall dimensions of the cleaning tool are such that the tool fits into a conventional package for heat sticks.
The distal end of the elongate element may be tapered. By providing a tapered end, the corners at the base of the heating chamber of the aerosol-generating device can be reached by the elongate element of the cleaning tool.
The distal end of the elongate element may comprise a rounded portion. The rounded portion facilitates the cleaning of the heating chamber of the aerosol-generating device, particularly the base of the heating chamber. The rounded portion furthermore generates sufficient stability of the distal end of the elongate element such that the distal end of the elongate element is not damaged or deformed during the cleaning operation.
The abrasive surface of the elongate element may be flat. With the flat surface, the contact area between the elongate element and the heating element may be maximized to facilitate cleaning of the heating element of the aerosol-generating device. Particularly, if the heating element is provided as a heating blade, the side surfaces of the heating element can be optimally cleaned with the flat configuration of the abrasive surface of the elongate element.
The abrasive surface of the elongate element may have a curved surface in the direction perpendicular to the longitudinal axis of the elongate element. In other words, the abrasive surface may be provided curved in the radial direction. In this way, the surface may match the surface shape of the heating chamber, particularly if the heating chamber has a cylindrical shape. Thus, this configuration of the abrasive surface of the elongate element enables an optimized cleaning of the heating element as well as of the heating chamber of the aerosol-generating device.
The elongate element may comprise a rib along the longitudinal axis of the elongate element. The rib may be arranged opposite to the abrasive surface of the elongate element. The rib is preferably centrally aligned along the longitudinal axis of the elongate element. The rib may enhance the structural stability of the elongate element so that in use of the cleaning tool the elongate element is more resilient to damage or deformation.
The abrasive surface of the elongate element is configured as a corrugated cardboard surface. This has the advantage that—during insertion of the cleaning tool into the heating chamber of the aerosol-generating device—the heating element may slide in between the corrugations of the corrugated surface so that unwanted residues are scrapped off of the heating element during the insertion and removing of the cleaning tool. Particularly if the elongate element is made from corrugated cardboard, this configuration may enhance the stability of the elongate element and at the same time enable an optimized cleaning operation of the heating element and the heating chamber of the aerosol-generating device. If the heating element is provided as a heating blade, the corrugations may be shaped so that the heating blade can be slided in-between corrugations of the elongate element. Thus, residues may be scraped of the heating blade by sliding the heating blade in the corrugations of the elongate element.
The cleaning tool may further comprise a tubular element at the proximal end of the elongate element, which is configured to be insertable into the heating chamber of the aerosol-generating device. In this embodiment, the elongate element may be provided for cleaning of the heating element, while the tubular element may be provided for cleaning of the heating chamber of the aerosol-generating device. During use, the user may clean the heating element and subsequently reverse the cleaning tool for cleaning of the heating chamber with the elongate element or vice versa.
The tubular element may comprise at least one groove, preferably a plurality of grooves, for contacting and cleaning the base of the heating chamber. The grooves enhance the cleaning action of the base of the heating chamber. During the cleaning operation, the user may rotate the tubular element after inserting the elongate element into the heating chamber so that the tubular element contacts the base of the heating chamber. The grooves enhance the scraping off of residues of aerosol-forming substrate from the base of the heating chamber.
The tubular element may have a partial or full tubular cross-section. The heating chamber of aerosol-generating devices may have a cylindrical shape. If the shape is of perfectly round cylindrical shape, the shape of the tubular element may be chosen having a full tubular cross section. In this embodiment, the outer shape of the tubular element preferably resembles the shape of the inner surface of the heating chamber. The inner surface of the heating chamber can then be cleaned by inserting the tubular element into the heating chamber. If, however, the inner shape of the heating chamber does not resemble a round cylinder, a partial tubular cross section may be chosen for the shape of the tubular element. For example, a rib or band or protrusion may be provided at the inner surface of the heating chamber. In such a case, the tubular element with the partial tubular cross section may be inserted into the heating chamber only contacting essentially half of the inner surface of the heating chamber opposite from the protrusion. Then, the tubular element may be rotated until the tubular element abuts the protrusion. Hence, the inner surface of the heating chamber can be cleaned according to this embodiment by inserting and rotating the tubular member.
The tubular element may comprise at least one rib arranged along the longitudinal axis of the cleaning tool at the outer surface of the tubular element. Similar to the embodiment in which the tubular element is provided with a partial tubular cross-section, a heating chamber with a protrusion can be cleaned by providing a rib along the longitudinal length of the tubular element. Preferably, the diameter of the tubular element is in this case smaller than the inner diameter of the heating chamber so that the tubular element can be inserted into the heating chamber even if a protrusion is provided in the heating chamber. Only the rib of the tubular element contacts the inner surface of the heating chamber in this embodiment. After insertion of the tubular element, rotation of the tubular element has the effect that the rib of the tubular element scrapes off residues sticking to the inner surface of the heating chamber.
The invention also relates to an aerosol-generating device and cleaning tool for cleaning the aerosol-generating device, wherein the aerosol-generating device comprises a heating chamber and a heating element arranged in the heating chamber, wherein the cleaning tool comprises an elongate element that has a proximate end and a distal end, wherein the elongate element comprises an abrasive surface and is configured to be inserted into the heating chamber of the aerosol-generating device for cleaning at least the heating element.
The heating chamber of the aerosol-generating device may have a cylindrical shape. The heating element may be provided as a heating pin or a heating blade and may be centrally aligned in the heating chamber.
The invention also relates to a method for manufacturing a cleaning tool for cleaning an aerosol-generating device, wherein the aerosol-generating device comprises a heating chamber and a heating element arranged in the heating chamber, the method comprising the steps of:
(a) providing the cleaning tool with a proximate end and a distal end and an elongate element at the distal end,
(b) providing the elongate element with an abrasive surface, and
(c) configuring the elongate element insertable into the heating chamber of the aerosol-generating device for cleaning at least the heating element.
The invention will be further described, by way of example only, with reference to the accompanying drawings in which:
In
Referring again to
The cleaning tool 10 is configured to be inserted into a heating chamber of an aerosol-generating device. Particularly, the distal end 14 of the cleaning tool 10 is inserted first into the heating chamber of the aerosol-generating device. Inside of the heating chamber of the aerosol-generating device, a heating element is provided which can be cleaned by the abrasive surface along the elongated element 12 of the cleaning tool 10.
In this regard, the abrasive surface along the elongate element 12 of the cleaning tool 10 is arranged such that the abrasive surface can scrape off residues which adhere to the heating element within the heating chamber of the aerosol-generating device. The tip at the distal end 14 of the cleaning tool 10 may additionally be provided to scrape off residues from the base of the heating chamber. The abrasive surface can also be used to scrape off the residues from the inner walls of the heating chamber by sliding the abrasive surface along the inner walls of the heating chamber.
As can be seen in the left part of
Furthermore, the elongate element may be tapered adjacent to the rounded portion 18 so that a tapered area 20 is provided. The tapered area 20 facilitates that the distal end 14 of the cleaning tool 10 can reach the base of the heating chamber and particularly the corners of the base of the heating chamber.
In
The right part of
As can also be seen in
Not depicted in
The tubular element 26, which is depicted in
Proximal from the connection element 28, a partially tubular portion 30 of the tubular element is depicted in
The configuration of the tubular portion 26 as a partial tubular portion 30 has the advantage that this portion can be inserted into the heating chamber of an aerosol-generating device even if the heating chamber does not have a perfectly cylindrical shape. For example, a protrusion such as a vertical ridge may be presented in the heating chamber such that a full tubular portion could not be inserted into the heating chamber or that a full tubular portion would then not contact the inner walls of the heating chamber so that residues could not be sufficiently removed from the inner walls.
If, however, the heating chamber has a perfectly cylindrical shape, a full tubular portion 34 as depicted in
In
During use, the tubular element 26 is inserted into the heating chamber of the aerosol-generating device to clean the heating chamber, particularly the inner walls and the base of the heating chamber. In this first cleaning step, the distal portion may act as a handle. Subsequently, the cleaning tool 10 is reversed so that the distal portion depicted in
As depicted in
Number | Date | Country | Kind |
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18161492.6 | Mar 2018 | EP | regional |
Filing Document | Filing Date | Country | Kind |
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PCT/EP2019/056014 | 3/11/2019 | WO | 00 |